Chemistry Letters, Vol.38, No.4, 324-325, 2009
Hyperchromic Effect of Silyl Groups on the UV-Visible Spectrum of 5,10,15,20-Tetraphenylporphyrin
UV-visible spectra of 5,10,15,20-tetrakis(4-silylphenyl)porphyrins and 5,10,15,20-tetrakis(3,5-disilylphenyl)porphyrins were measured. Silyl groups were found to have a hyperchromic effect on the Soret band and the Q band of 5,10,15,20-tetraphenylporphyrin.